Hydrogen-absorbing alloy electrode

Details Hydrogen-absorbing alloy electrode Hydrogen-absorbing alloy electrode

1989-12-11

1991-04-16

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

Prevention or elimination means is one of the cell...

429218, 420455, 420900, H01M 424, H01M 438, C22C 1903

Patent

active

050081640

ABSTRACT:
A hydrogen-absorbing alloy electrode comprising a hydrogen-absorbing alloy represented by a formula ANi.sub.a Co.sub.b Mn.sub.c or ANi.sub.a Co.sub.b Mn.sub.c X.sub.d, A representing a mixture of rare earth elements including La and X representing at least one element selected from a group of Fe, Cu, Mo, W, B, Al, Si and Sn, wherein 2.5.ltoreq.a.ltoreq.3.5, 0.4.ltoreq.b.ltoreq.1.5, 0.2.ltoreq.c.ltoreq.1.0, and 3.85.ltoreq.a+b+c.ltoreq.4.78 in the case of ANi.sub.a Co.sub.b Mn.sub.c or 2.5.ltoreq.a.ltoreq.3.5, 0.4.ltoreq.b.ltoreq.1.5, 0.2.ltoreq.c.ltoreq.1.0, 0<d.ltoreq.0.3 and 3.85.ltoreq.a+b+c+d.ltoreq.4.78 in the case of ANi.sub.a Co.sub.b Mn.sub.c X.sub.d, is disclosed. La is contained in a weight ratio (%) of 20.ltoreq.La.ltoreq.50 against a total weight of the rare earth elements.

REFERENCES:
patent: 4147536 (1979-04-01), Osumi et al.
patent: 4396576 (1983-08-01), Osumi et al.
patent: 4487817 (1984-12-01), Willems
patent: 4605603 (1986-08-01), Kanda et al.

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